Quoc Thong Le Gia, Ian H. Sloan, Andrew J. Wathen. Stability and preconditioning for a hybrid approximation on the sphere. Numerische Mathematik, 118(4):695-711, 2011. [doi]
@article{GiaSW11, title = {Stability and preconditioning for a hybrid approximation on the sphere}, author = {Quoc Thong Le Gia and Ian H. Sloan and Andrew J. Wathen}, year = {2011}, doi = {10.1007/s00211-011-0369-0}, url = {http://dx.doi.org/10.1007/s00211-011-0369-0}, researchr = {https://researchr.org/publication/GiaSW11}, cites = {0}, citedby = {0}, journal = {Numerische Mathematik}, volume = {118}, number = {4}, pages = {695-711}, }